Which organism is not an arachnid?

a. spider
b. scorpion
c. tick
d. ant
e. mite


ANSWER: d

Biology & Microbiology

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What wide-acting pituitary hormone targets cells throughout the body?

a. adrenocorticotropic hormone b. thyroid-stimulating hormone c. gonadotropin d. growth hormone e. prolactin

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The observation of a range of phenotypes in a genetic trait is ____

a. pleiotropy b. genomic imprinting c. codominance d. penetrance e. continuous variation

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The spindle fibers attach to the centromere via a protein complex called

A) tubulins. B) microtubules. C) chromatid. D) kinetochore. E) chiasma.

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If the pH of a solution is decreased from 9 to 8, it means that the concentration of _____

A) H+ has decreased to one-tenth (1/10 ) what it was at pH 9 B) H+ has doubled compared to what it was at pH 9 C) H+ has increased tenfold (10X) compared to what it was at pH 9 D) OH- has increased tenfold (10X) compared to what it was at pH 9

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